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MOUNTAIN WSD

Colorado — Community Water System — PWSID: CO0130100

System Information

PWSIDCO0130100
System NameMOUNTAIN WSD
System TypeCommunity Water System
Water SourceGround Water Under Influence
Activity StatusActive
Owner TypeLocal
EPA Region08
Serves SchoolNo
WholesalerNo
First ReportedMar 20, 1979
Last ReportedNov 17, 2025

Location & Contact

StateColorado
CityCONIFER
ZIP Code80433
Address12365 HWY 285
OrganizationSWANSON, RICHARD
Phone303-838-1800

Population & Service

Population Served1,941
Service Connections399

Drinking Water Violations (168)

This water system has 168 violations recorded in the EPA SDWIS database.

Begin Date End Date Contaminant Category Health-Based Major Measured Federal MCL State MCL Status Return to Compliance Rule
Jul 1, 2025 — Consumer Confidence Rule Other No No — — — Resolved Jul 15, 2025 Consumer Confidence Rule
Jul 1, 2025 — Consumer Confidence Rule Other No No — — — Resolved Jul 15, 2025 Consumer Confidence Rule
Jul 1, 2025 — Consumer Confidence Rule Other No No — — — Resolved Jul 15, 2025 Consumer Confidence Rule
Oct 1, 2024 Oct 31, 2024 Interim Enhanced Surface Water Treatment Rule MR No Yes — — — Resolved Oct 31, 2024 Interim and Long Term 1 Enhanced Surface Water Treatment Rule
Oct 1, 2024 Oct 31, 2024 Surface Water Treatment Rule MR No Yes — — — Resolved Oct 31, 2024 Surface Water Treatment Rule
Oct 1, 2024 Oct 31, 2024 Interim Enhanced Surface Water Treatment Rule MR No Yes — — — Resolved Oct 31, 2024 Interim and Long Term 1 Enhanced Surface Water Treatment Rule
Oct 1, 2024 Oct 31, 2024 Surface Water Treatment Rule MR No Yes — — — Resolved Oct 31, 2024 Surface Water Treatment Rule
Oct 1, 2024 Oct 31, 2024 Surface Water Treatment Rule MR No Yes — — — Resolved Oct 31, 2024 Surface Water Treatment Rule
Oct 1, 2024 Oct 31, 2024 Interim Enhanced Surface Water Treatment Rule MR No Yes — — — Resolved Oct 31, 2024 Interim and Long Term 1 Enhanced Surface Water Treatment Rule
May 1, 2024 May 31, 2024 Interim Enhanced Surface Water Treatment Rule TT Yes No — — — Resolved May 31, 2024 Interim and Long Term 1 Enhanced Surface Water Treatment Rule
May 1, 2024 May 31, 2024 Interim Enhanced Surface Water Treatment Rule TT Yes No — — — Resolved May 31, 2024 Interim and Long Term 1 Enhanced Surface Water Treatment Rule
May 1, 2024 May 31, 2024 Interim Enhanced Surface Water Treatment Rule TT Yes No — — — Resolved May 31, 2024 Interim and Long Term 1 Enhanced Surface Water Treatment Rule
May 1, 2024 May 31, 2024 Interim Enhanced Surface Water Treatment Rule TT Yes No — — — Resolved May 31, 2024 Interim and Long Term 1 Enhanced Surface Water Treatment Rule
Dec 1, 2020 Dec 31, 2020 Surface Water Treatment Rule MR No Yes — — — Resolved Dec 31, 2020 Surface Water Treatment Rule
Dec 1, 2020 Dec 31, 2020 Surface Water Treatment Rule MR No Yes — — — Resolved Dec 31, 2020 Surface Water Treatment Rule
Dec 1, 2020 Dec 31, 2020 Surface Water Treatment Rule MR No Yes — — — Resolved Dec 31, 2020 Surface Water Treatment Rule
May 1, 2013 May 31, 2013 Coliform (TCR) MR No No — 5% of samples — Resolved May 31, 2013 Total Coliform Rule
May 1, 2013 May 31, 2013 Coliform (TCR) MR No No — 5% of samples — Resolved May 31, 2013 Total Coliform Rule
May 1, 2013 May 31, 2013 Coliform (TCR) MR No No — 5% of samples — Resolved May 31, 2013 Total Coliform Rule
May 1, 2013 May 31, 2013 Coliform (TCR) MR No No — 5% of samples — Resolved May 31, 2013 Total Coliform Rule
Apr 1, 2013 Jun 30, 2013 Chlorine MR No Yes — 4.0 mg/L — Resolved Jun 30, 2013 Stage 1 Disinfectants and Disinfection Byproducts Rule
Apr 1, 2013 Jun 30, 2013 Chlorine MR No Yes — 4.0 mg/L — Resolved Jun 30, 2013 Stage 1 Disinfectants and Disinfection Byproducts Rule
Apr 1, 2013 Jun 30, 2013 Chlorine MR No Yes — 4.0 mg/L — Resolved Jun 30, 2013 Stage 1 Disinfectants and Disinfection Byproducts Rule
Apr 1, 2013 Jun 30, 2013 Chlorine MR No Yes — 4.0 mg/L — Resolved Jun 30, 2013 Stage 1 Disinfectants and Disinfection Byproducts Rule
Jan 1, 2011 Dec 31, 2011 Combined Uranium MCL Yes No 150 UG/L 30 ug/L 30 Resolved Dec 31, 2011 Radionuclides and Revised Rad Rule
Jan 1, 2011 Dec 31, 2011 Combined Uranium MCL Yes No 150 UG/L 30 ug/L 30 Resolved Dec 31, 2011 Radionuclides and Revised Rad Rule
Jan 1, 2011 Dec 31, 2011 Combined Uranium MCL Yes No 150 UG/L 30 ug/L 30 Resolved Dec 31, 2011 Radionuclides and Revised Rad Rule
Jan 1, 2011 Dec 31, 2011 Combined Uranium MCL Yes No 150 UG/L 30 ug/L 30 Resolved Dec 31, 2011 Radionuclides and Revised Rad Rule
Jan 1, 2011 Dec 31, 2011 Combined Uranium MCL Yes No 150 UG/L 30 ug/L 30 Resolved Dec 31, 2011 Radionuclides and Revised Rad Rule
Oct 1, 2010 Dec 31, 2010 Combined Uranium MCL Yes No 35 UG/L 30 ug/L 30 Resolved Dec 31, 2010 Radionuclides and Revised Rad Rule
Oct 1, 2010 Dec 31, 2010 Combined Uranium MCL Yes No 35 UG/L 30 ug/L 30 Resolved Dec 31, 2010 Radionuclides and Revised Rad Rule
Oct 1, 2010 Dec 31, 2010 Combined Uranium MCL Yes No 35 UG/L 30 ug/L 30 Resolved Dec 31, 2010 Radionuclides and Revised Rad Rule
Oct 1, 2010 Dec 31, 2010 Combined Uranium MCL Yes No 35 UG/L 30 ug/L 30 Resolved Dec 31, 2010 Radionuclides and Revised Rad Rule
Oct 1, 2010 Dec 31, 2010 Combined Uranium MCL Yes No 35 UG/L 30 ug/L 30 Resolved Dec 31, 2010 Radionuclides and Revised Rad Rule
Jan 1, 2010 Dec 31, 2010 Combined Uranium MCL Yes No 99 UG/L 30 ug/L 30 Resolved Dec 31, 2010 Radionuclides and Revised Rad Rule
Jan 1, 2010 Dec 31, 2010 Combined Uranium MCL Yes No 99 UG/L 30 ug/L 30 Resolved Dec 31, 2010 Radionuclides and Revised Rad Rule
Jan 1, 2010 Dec 31, 2010 Combined Uranium MCL Yes No 99 UG/L 30 ug/L 30 Resolved Dec 31, 2010 Radionuclides and Revised Rad Rule
Jan 1, 2010 Dec 31, 2010 Combined Uranium MCL Yes No 99 UG/L 30 ug/L 30 Resolved Dec 31, 2010 Radionuclides and Revised Rad Rule
Jan 1, 2010 Dec 31, 2010 Combined Uranium MCL Yes No 99 UG/L 30 ug/L 30 Resolved Dec 31, 2010 Radionuclides and Revised Rad Rule
Jan 1, 2009 Dec 31, 2009 Gross Alpha, Excl. Radon and U MR No Yes — 15 pCi/L — Resolved Dec 31, 2009 Radionuclides and Revised Rad Rule
Jan 1, 2009 Dec 31, 2009 Combined Radium (-226 and -228) MR No Yes — 5 pCi/L — Resolved Dec 31, 2009 Radionuclides and Revised Rad Rule
Jan 1, 2009 Dec 31, 2009 Gross Alpha, Excl. Radon and U MR No Yes — 15 pCi/L — Resolved Dec 31, 2009 Radionuclides and Revised Rad Rule
Jan 1, 2009 Dec 31, 2009 Combined Uranium MR No Yes — 30 ug/L — Resolved Dec 31, 2009 Radionuclides and Revised Rad Rule
Jan 1, 2009 Dec 31, 2009 Combined Uranium MCL Yes No 240 UG/L 30 ug/L 30 Resolved Dec 31, 2009 Radionuclides and Revised Rad Rule
Jan 1, 2009 Dec 31, 2009 Combined Radium (-226 and -228) MR No Yes — 5 pCi/L — Resolved Dec 31, 2009 Radionuclides and Revised Rad Rule
Jan 1, 2009 Dec 31, 2009 Combined Uranium MCL Yes No 240 UG/L 30 ug/L 30 Resolved Dec 31, 2009 Radionuclides and Revised Rad Rule
Jan 1, 2009 Dec 31, 2009 Combined Uranium MR No Yes — 30 ug/L — Resolved Dec 31, 2009 Radionuclides and Revised Rad Rule
Jan 1, 2009 Dec 31, 2009 Combined Uranium MCL Yes No 240 UG/L 30 ug/L 30 Resolved Dec 31, 2009 Radionuclides and Revised Rad Rule
Jan 1, 2009 Dec 31, 2009 Gross Alpha, Excl. Radon and U MR No Yes — 15 pCi/L — Resolved Dec 31, 2009 Radionuclides and Revised Rad Rule
Jan 1, 2009 Dec 31, 2009 Combined Uranium MR No Yes — 30 ug/L — Resolved Dec 31, 2009 Radionuclides and Revised Rad Rule

About This Water System

Public water system data comes from the EPA Safe Drinking Water Information System (SDWIS). Systems with violations must notify customers. Contact your water utility for the latest annual water quality report.

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